<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>01-计算属性的基本使用</title>

</head>

<body>
  <div id="app">
    <h2>{{firstName + '' + lastName}}</h2>
    <h2>{{getFullName()}}</h2>
    <h2>{{fullName}}</h2>
  </div>
  <script src="../js/vue.js"></script>
  <script>
    const app = new Vue({
      el: '#app',
      data: {
        message: 'hello Vue',
        firstName: 'hello',
        lastName: '你好啊'
      },
      // computed 计算属性()
      computed: {
        fullName: function() {
          return this.firstName + ',' + this.lastName;
        }
      },
      // 自定义方法
      methods: {
        getFullName: function() {
          return this.firstName + '--' + this.lastName
        }
      }
    })
  </script>
  <style>

  </style>
</body>

</html>